Prosecution Insights
Last updated: April 19, 2026
Application No. 18/423,335

CONTAINERIZED SINGLE-PHASE LIQUID IMMERSION COOLING SYSTEM

Non-Final OA §112
Filed
Jan 26, 2024
Examiner
SMITH, COURTNEY L
Art Unit
2835
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Hangzhou Dare Rouhan Technology Co. Ltd.
OA Round
1 (Non-Final)
85%
Grant Probability
Favorable
1-2
OA Rounds
2y 6m
To Grant
97%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allow Rate
1062 granted / 1244 resolved
+17.4% vs TC avg
Moderate +12% lift
Without
With
+11.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
36 currently pending
Career history
1280
Total Applications
across all art units

Statute-Specific Performance

§103
39.1%
-0.9% vs TC avg
§102
33.9%
-6.1% vs TC avg
§112
24.4%
-15.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1244 resolved cases

Office Action

§112
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-10, are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Regarding Claim 1; “the secondary-side medium in the bypass pipe serves as a heat source” in line 12 is unclear; whereas the bypass pipe or the medium is not asserted to comprise an origin of heat generation, does not assert any heat generating devices thereof, and/or does not assert any features which increases a temperature of i.e. the secondary-side medium etc., and thus it cannot be readily ascertained what function is actually intended by the assertion (NOTE: at best, it appears that atleast a portion of heated secondary-side medium is conveyed by the bypass pipe); Further, in line(s) 13-14, “communicated with an external device through a hot water outlet to recover waste heat, and the medium cooled after waste heat recovery returns to a cold water pipe” is unclear; whereas it appears the secondary-side cooling medium is intended to bypass the liquid cooling system to communicate with an external device. However, it cannot be readily ascertained if the external device is deemed as a portion of the liquid cooling system or otherwise if deemed as a separate external device that is external to the container and the liquid cooling system since i.e.-Fig.’s 2 or 6 only appear to connect the hot water outlet 8 as coupled to the liquid cooling system-1 and the bypass pipe (hot water outlet for recovery of waste heat) i.e. 10 is not shown as connected to any other structure; and it is also noted that, “the medium cooled after waste heat recovery returns to a cold water pipe” is unclear; whereas the limitation appears to suggest without explicit assertion that the medium is cooled by the external device (unknown), and thus it cannot be readily ascertained if the external device is deemed as an alternative energy means and/or cooling structure etc. Going further, “the control unit provides a stable flow rate and pressure for the liquid immersion cooling system, and monitors and maintains operation of the liquid immersion cooling system” is unclear; whereas the control unit is asserted alone without any of the actual processing, mechanical and/or respective sensing structures to detect, process and control flow rate and pressure including i.e. processor(s), sensors, pumps, valves etc. The office hereby notes that the assertion are herein presented as amenable to more than one plausible claim construction which may read on varying inventive structures. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US 20150181762 A1 Boyd; Christopher L. Fig.’s 2, 4 US 20140307384 A1 Best; Christiaan Scott et al. Fig.’s 1A, and 2-4 Any inquiry concerning this communication or earlier communications from the examiner should be directed to COURTNEY SMITH whose telephone number is (571)272-9094. The examiner can normally be reached M-F 9-5p. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Jayprakash Gandhi can be reached at 571-272-3740. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /COURTNEY L SMITH/Primary Examiner, Art Unit 2835
Read full office action

Prosecution Timeline

Jan 26, 2024
Application Filed
Oct 10, 2025
Non-Final Rejection — §112
Jan 12, 2026
Response Filed
Jan 12, 2026
Response after Non-Final Action

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12604440
LOWER MODULE OF POWER ELECTRONIC DEVICE
2y 5m to grant Granted Apr 14, 2026
Patent 12604439
VEHICLE-MOUNTED POWER SUPPLY APPARATUS AND VEHICLE
2y 5m to grant Granted Apr 14, 2026
Patent 12604442
POWER MODULE, PARTICULARLY FOR POWER ELECTRONICS OF A VEHICLE
2y 5m to grant Granted Apr 14, 2026
Patent 12598726
Control Module for a Vehicle With at Least an Electric Motor and a Transmission
2y 5m to grant Granted Apr 07, 2026
Patent 12593423
FLOW-THROUGH FOLDING MEMBRANE ACCUMULATOR FOR LIQUID COOLING SYSTEM
2y 5m to grant Granted Mar 31, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
85%
Grant Probability
97%
With Interview (+11.7%)
2y 6m
Median Time to Grant
Low
PTA Risk
Based on 1244 resolved cases by this examiner. Grant probability derived from career allow rate.

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